Table 20. Copy processor board LEDs (continued) C8523-90921 Copy processor board 97 LED pattern CPB status 0 0 0 0 CPB is communicating with the DSP and DSP RAM Second stage of CPB initialization 1 0 0 0 The left-most LED illuminates and stays on when the connection to the SSA (the portion of the firmware that runs in the print engine RAM) is established. 1 1 0 0 The second LED from the left illuminates when communication occurs between the CPB and the scan engine. 1 1 0 1 The right-most LED illuminates indicating the CPB has booted properly. When this LED begins to flash (referred to as the CPB heartbeat) the CPB is functioning normally and the MFP is ready to process jobs.